The word "difference" between impermeable geotechnical membrane and impermeable geotechnical cloth in geotechnical membrane
Number of hits：1622018-12-01 00:00:00
The waterproof general structure of the roof is to first lay a layer of cement mortar on the roof panel to find a flat layer. The upper layer is covered with a composite geotechnical membrane for the waterproof layer and the thermal insulation layer, and finally the fine stone concrete rigid waterproof layer.
The impermeable geotechnical membrane is a kind of polymer chemical flexible material with small specific gravity, strong extensibility, high ability to adapt to deformation, corrosion resistance, low temperature resistance, and good cold resistance. Its main mechanism is to use the impermeability of the plastic film to block the leakage channel of the earth dam, and to withstand the water pressure and adapt to the deformation of the dam body with its greater tensile strength and extension rate. The impermeable earth cloth is made of plastic film as impermeable material, and the non-woven cloth is combined with the impermeable material. Its impermeable property mainly depends on the impermeable properties of the plastic film.
At present, the plastic films used in impermeable geotechnical film at home and abroad mainly include polyvinyl chloride(PVC) and polyethylene(PE), which are polymer chemical flexible materials with small specific gravity, strong elongation, and high ability to adapt to deformation. Corrosion resistance, low temperature resistance, good cold resistance. Its main mechanism is to use the impermeability of the plastic film to block the leakage channel of the earth dam, and to withstand the water pressure and adapt to the deformation of the dam body with its greater tensile strength and extension rate.
The non-woven fabric is also a kind of polymer short fiber chemical material. It has high tensile strength and elongation through acupuncture or hot adhesion. After it is combined with plastic film, it not only increases the tensile strength and anti-puncture ability of the plastic film, but also Because the surface of the non-woven fabric is rough, The friction coefficient of the contact surface is increased, which is beneficial to the stability of the composite geotechnical film and protective layer. At the same time, they have good corrosion resistance to bacteria and chemistry, and are not afraid of the erosion of acids, bases, and salts.